NEWS

---

SpatialExtremes 2.0-7 (2018-07-02)

BUG FIXES

• Fix a bug in the (exact!) simulation from the Schlather max-stable process.
• Fix a bug in how to handle NA values in the prediction

SpatialExtremes 2.0-6 (2018-01-05)

BUG FIXES

• Minor modification to suppress warnings with a new release of R.

SpatialExtremes 2.0-5 (2017-09-17)

BUG FIXES

• Fix a bug with the simulation for the geometric model. Thanks to Zhuo Wang for finding it!

SpatialExtremes 2.0-4 (2017-08-24)

NEW FEATURES

• Exact simulation for max-stable processes are now fully implemented.
• Parallelization is used for computing pairwise likelihood—should be faster (finally).

SpatialExtremes 2.0-3 (2017-08-20)

NEW FEATURES

• Concurrence probabilities and cells are now implemented.
• Exact simulation for max-stable processes are (partially) implemented.

SpatialExtremes 2.0-0 (2013-03-04)

SIGNIFICANT USER-VISIBLE CHANGES

• There is only one methodology to compute standard errors; hence the arguments std.err.type is deprectated.

NEW FEATURES

• Missings values (NA's) are now available for max-stable and latent models !

BUG FIXES

• Fix a bug with the mean of the prior distribution assumed on the regression parameters for the latent variable approach.

SpatialExtremes 1.9-0 (2012-11-06)

SIGNIFICANT USER-VISIBLE CHANGES

• The memory allocation is now much improved, your computer should not freeze anymore ;-)

NEW FEATURES

• Conditional simulations from various max-stable models (not max-linear models) are available.
• Simulation from the extremal-t process are now performed using its spectral characterization
• Different (but still naive) approaches for simulating Brown-Resnick processes are implemented

BUG FIXES

• Fix a bug with the latent variable model that might crash R
• Fix a bug with temporal trends

SpatialExtremes 1.8-1 (2011-07-05)

SIGNIFICANT USER-VISIBLE CHANGES

• The parameter "sill" is now called "nugget" to avoid confusion. More precisely, we now have nugget = 1 - sill, so if one wants no nugget effect just set nugget = 0.

NEW FEATURES

• Model checking for the copula based models is now implemented — similar to the plot.maxstab function
• It is now possible to simulate from copula based models
• The package now uses openmp as much as possible!

BUG FIXES

• Fix a bug with the Student-t copula model
• Fix a bug with standard errors and 3d Smith model

SpatialExtremes 1.8-0 (2011-03-23)

SIGNIFICANT USER-VISIBLE CHANGES

• Improvement of the simulation technique for Brown-Resnick processes.

NEW FEATURES

• (Approximate) conditional simulations of unit Frechet max-stable random fields is implemented.
• The copula approach is now available — use with caution!
• Max-linear models are now available.

BUG FIXES

• Fix a bug with model selection.

SpatialExtremes 1.7-0 (2010-10-29)

SIGNIFICANT USER-VISIBLE CHANGES

• Update contact info: now in Montpellier!
• A new function ”latent” for Bayesian hierarchical models

BUG FIXES

• Fix a bug in simulating Brown-Resnick processes

SpatialExtremes 1.6-0 (2010-08-13)

SIGNIFICANT USER-VISIBLE CHANGES

• The extremal t model is now available — including simulation. Simulations on a grid might be really long though.
• Model checking for fitted max-stable processes is easier as a method for plotting object of class "maxstab" is implemented.
• "fitspatgev" and "fitmaxstab" now allow for "temporal" covariates, for example a linear trend can be put for the location parameter.

NEW FEATURES

• Simulation of Brown-Resnick processes are available but should *NOT* be considered as stable!
• Computation of the empirical variogram is implemented
• The fitting and simulation of max-stable processes is now much faster.
• The circulant embedding method is now implemented.

BUG FIXES

• Fix a bug when using temporal covariates.
• Fix a bug in simulating Gaussian random fields having a powered exponential covariance function through the turning bands method.
• The parametrization of Brown-Resnick processes was not consistent throughout the code. Now fixed.

SpatialExtremes 1.5-1 (2010-01-14)

BUG FIXES

• Fix a bug in computing the standard errors for the geometric gaussian model (marginal part)

SpatialExtremes 1.5-0 (2009-12-30)

SIGNIFICANT USER-VISIBLE CHANGES

• The 'map' and 'condmap' functions now allow covariates
• fitmaxstab allows weights in the pairwise likelihood
• predict will display standard errors if possible

NEW FEATURES

• Brown-Resnick processes are available
• The generalized Cauchy correlation function is available
• New function 'lsmaxstab' that wraps 'fitcovariance' and 'fitcovmat' and is similar to 'fitmaxstab' but uses least squares
• Composite version of the BIC is available
• The standard errors are now computed without the use of the finite difference based estimate of the Hessian matrix

DEPRECATED & DEFUNCT

• The 'fitcovmat' and 'fitcovariance' will be removed soon as the new 'lsmaxstab' wraps them

BUG FIXES

• Fix a bug in simulating smith's max-stable process on a grid